In: Chemistry
How do the experimental rates for the Diels-Alder reactions of cyclopentadiene and the different dienophiles correlate to the energies of the calculated LUMO? REFER TO TABLE BELOW! Please explain in detail.
| 
 Diels-Alder dienophiles:  | 
||
| 
 Label  | 
 Log (rate)  | 
 E (LUMO) (eV)  | 
| 
 Acrylonitrile  | 
 0.00  | 
 2.85  | 
| 
 1,1-dicyanoethene  | 
 4.64  | 
 1.09  | 
| 
 Cis-1,2-dicyanoethylene  | 
 1.94  | 
 1.16  | 
| 
 Trans-1,2-dicyanoethylene  | 
 1.89  | 
 1.40  | 
| 
 Tricyanoethylene  | 
 5.66  | 
 -0.12  | 
| 
 Tetracyanoethylene  | 
 7.61  | 
 -1.24  |